(function (factory) {
    if (typeof define === 'function' && define.amd) {
      define(['jquery'], factory);
    } else if (typeof exports === 'object') {
      // Node / CommonJS
      factory(require('jquery'));
    } else {
      factory(jQuery);
    }
  })(function ($) {
  
    'use strict';
  
    var console = window.console || { log: function () {} };
  
    function CropAvatar($element) {
      this.$container = $element;
  
      this.$avatarView = this.$container.find('.avatar-view');
      this.$avatar = this.$avatarView.find('img');
      this.$avatarModal = this.$container.find('#avatar-modal');
      this.$loading = this.$container.find('.loading');
  
      this.$avatarForm = this.$avatarModal.find('.avatar-form');
      this.$avatarUpload = this.$avatarForm.find('.avatar-upload');
      this.$avatarSrc = this.$avatarForm.find('.avatar-src');
      this.$avatarData = this.$avatarForm.find('.avatar-data');
      this.$avatarInput = this.$avatarForm.find('.avatar-input');
      this.$avatarSave = this.$avatarForm.find('.avatar-save');
      this.$avatarBtns = this.$avatarForm.find('.avatar-btns');
  
      this.$avatarWrapper = this.$avatarModal.find('.avatar-wrapper');
      this.$avatarPreview = this.$avatarModal.find('.avatar-preview');
  
      this.init();
      console.log(this);
    }
  
    CropAvatar.prototype = {
      constructor: CropAvatar,
  
      support: {
        fileList: !!$('<input type="file">').prop('files'),
        blobURLs: !!window.URL && URL.createObjectURL,
        formData: !!window.FormData
      },
  
      init: function () {
        this.support.datauri = this.support.fileList && this.support.blobURLs;
  
        if (!this.support.formData) {
          this.initIframe();
        }
  
        this.initTooltip();
        this.initModal();
        this.addListener();
      },
  
      addListener: function () {
        this.$avatarView.on('click', $.proxy(this.click, this));
        this.$avatarInput.on('change', $.proxy(this.change, this));
        this.$avatarForm.on('submit', $.proxy(this.submit, this));
        this.$avatarBtns.on('click', $.proxy(this.rotate, this));
      },
  
      initTooltip: function () {
        this.$avatarView.tooltip({
          placement: 'bottom'
        });
      },
  
      initModal: function () {
        this.$avatarModal.modal({
          show: false
        });
      },
  
      initPreview: function () {
        var url = this.$avatar.attr('src');
  
        this.$avatarPreview.empty().html('<img src="' + url + '">');
      },
  
      initIframe: function () {
        var target = 'upload-iframe-' + (new Date()).getTime(),
            $iframe = $('<iframe>').attr({
              name: target,
              src: ''
            }),
            _this = this;
  
        // Ready ifrmae
        $iframe.one('load', function () {
  
          // respond response
          $iframe.on('load', function () {
            var data;
  
            try {
              data = $(this).contents().find('body').text();
            } catch (e) {
              console.log(e.message);
            }
  
            if (data) {
              try {
                data = $.parseJSON(data);
              } catch (e) {
                console.log(e.message);
              }
  
              _this.submitDone(data);
            } else {
              _this.submitFail('Image upload failed!');
            }
  
            _this.submitEnd();
  
          });
        });
  
        this.$iframe = $iframe;
        this.$avatarForm.attr('target', target).after($iframe.hide());
      },
  
      click: function () {
        this.$avatarModal.modal('show');
        this.initPreview();
      },
  
      change: function () {
        var files,
            file;
  
        if (this.support.datauri) {
          files = this.$avatarInput.prop('files');
  
          if (files.length > 0) {
            file = files[0];
  
            if (this.isImageFile(file)) {
              if (this.url) {
                URL.revokeObjectURL(this.url); // Revoke the old one
              }
  
              this.url = URL.createObjectURL(file);
              this.startCropper();
            }
          }
        } else {
          file = this.$avatarInput.val();
  
          if (this.isImageFile(file)) {
            this.syncUpload();
          }
        }
      },
  
      submit: function () {
        if (!this.$avatarSrc.val() && !this.$avatarInput.val()) {
          return false;
        }
  
        if (this.support.formData) {
          this.ajaxUpload();
          return false;
        }
      },
  
      rotate: function (e) {
        var data;
  
        if (this.active) {
          data = $(e.target).data();
  
          if (data.method) {
            this.$img.cropper(data.method, data.option);
          }
        }
      },
  
      isImageFile: function (file) {
        if (file.type) {
          return /^image\/\w+$/.test(file.type);
        } else {
          return /\.(jpg|jpeg|png|gif)$/.test(file);
        }
      },
  
      startCropper: function () {
        var _this = this;
  
        if (this.active) {
          this.$img.cropper('replace', this.url);
        } else {
          this.$img = $('<img src="' + this.url + '">');
          this.$avatarWrapper.empty().html(this.$img);
          this.$img.cropper({
            aspectRatio: 1,
            preview: this.$avatarPreview.selector,
            strict: false,
            crop: function (data) {
              var json = [
                    '{"x":' + data.x,
                    '"y":' + data.y,
                    '"height":' + data.height,
                    '"width":' + data.width,
                    '"rotate":' + data.rotate + '}'
                  ].join();
  
              _this.$avatarData.val(json);
            }
          });
  
          this.active = true;
        }
      },
  
      stopCropper: function () {
        if (this.active) {
          this.$img.cropper('destroy');
          this.$img.remove();
          this.active = false;
        }
      },
  
      ajaxUpload: function () {
        var url = this.$avatarForm.attr('action'),
            data = new FormData(this.$avatarForm[0]),
            _this = this;
  
        $.ajax(url, {
          type: 'post',
          data: data,
          dataType: 'json',
          processData: false,
          contentType: false,
  
          beforeSend: function () {
            _this.submitStart();
          },
  
          success: function (data) {
            _this.submitDone(data);
          },
  
          error: function (XMLHttpRequest, textStatus, errorThrown) {
            _this.submitFail(textStatus || errorThrown);
          },
  
          complete: function () {
            _this.submitEnd();
          }
        });
      },
  
      syncUpload: function () {
        this.$avatarSave.click();
      },
  
      submitStart: function () {
        this.$loading.fadeIn();
      },
  
      submitDone: function (data) {
        console.log(data);
  
        if ($.isPlainObject(data) && data.state === 200) {
          if (data.result) {
            this.url = data.result;
  
            if (this.support.datauri || this.uploaded) {
              this.uploaded = false;
              this.cropDone();
            } else {
              this.uploaded = true;
              this.$avatarSrc.val(this.url);
              this.startCropper();
            }
  
            this.$avatarInput.val('');
          } else if (data.message) {
            this.alert(data.message);
          }
        } else {
          this.alert('Failed to response');
        }
      },
  
      submitFail: function (msg) {
        this.alert(msg);
      },
  
      submitEnd: function () {
        this.$loading.fadeOut();
      },
  
      cropDone: function () {
        this.$avatarForm.get(0).reset();
        this.$avatar.attr('src', this.url);
        this.stopCropper();
        this.$avatarModal.modal('hide');
      },
  
      alert: function (msg) {
        var $alert = [
              '<div class="alert alert-danger avater-alert">',
                '<button type="button" class="close" data-dismiss="alert">&times;</button>',
                msg,
              '</div>'
            ].join('');
  
        this.$avatarUpload.after($alert);
      }
    };
  
    $(function () {
      return new CropAvatar($('#crop-avatar'));
    });
  
  });
  